Re: DG Scheduled log shipping at DR site
Date: Wed, 22 Dec 2010 15:57:32 +0000
Real Time Apply is great - unless you have low bandwidth (which we know) and spikes in redo generation (which we don't know but many people do). ARCHIVE_LAG_TARGET isn't the option on the redo destination to control when the redo can be applied, but a primary parameter saying there should be a log switch at at least intervals of this many seconds.
On Wed, Dec 22, 2010 at 12:36 PM, Michael Dinh <mdinh_at_xifin.com> wrote:
> Take a look at using Real Time Apply if there is not a requirement to keep
> the standby behind.
> I actually worked at a company where the standby lagged primary by 18
> The purpose was backup and to roll back batch jobs gone bad in the evening
> versus having to recover large database.
> Michael Dinh.
> From: oracle-l-bounce_at_freelists.org [oracle-l-bounce_at_freelists.org] On
> Behalf Of Niall Litchfield [niall.litchfield_at_gmail.com]
> Sent: Tuesday, December 21, 2010 11:07 PM
> To: krish33moorthy_at_gmail.com
> Cc: oracle Freelists
> Subject: Re: DG Scheduled log shipping at DR site
> If I understand you correctly, then you have large logs that switch rarely
> - and therefore you have spikes of bandwidth consumption at a log switch? If
> so then the parameter ARCHIVE_LAG_TARGET on the primary would seem designed
> for your requirements, I personally like a period of 15 minutes rather than
> an hour. Further forward you might wish to consider if large archives are
> appropriate. If I've misunderstood then the above is irrelevant.
> On Wed, Dec 22, 2010 at 2:57 AM, KRISHNA MOORTHY <krish33moorthy_at_gmail.com
> <mailto:krish33moorthy_at_gmail.com>> wrote:
> Hi All,
> We have Oracle 10g dataguard configuration - primary and DR site.
> Per day 3G logs are transferred to DR site.It fully utilize the network
> Is there any possible way for an scheduled log shipping? (one hour)...
> Niall Litchfield
> Oracle DBA
-- Niall Litchfield Oracle DBA http://www.orawin.info -- http://www.freelists.org/webpage/oracle-lReceived on Wed Dec 22 2010 - 09:57:32 CST